论文标题

不是两部分图的两部分图

A Bipartite Graph That Is Not the $γ$-Graph of a Bipartite Graph

论文作者

van Bommel, Christopher M.

论文摘要

对于图$ g =(v,e)$,$ g $的$γ$ - graph是其顶点集的图形,即最低主导集的集合,或$ g $的$γ$ - 集的$ g $,而两个$γ$ -SET在单个顶点和两个不同的顶点与$ g $相邻的情况相邻,则它们会相邻。 $γ$ - 图中的一个空旷的问题是,每个两部分图是某些两部分图的$γ$ - 图。我们通过证明$ k_ {2,3} $不是任何两部分图的$γ$ - 绘图来回答这个问题。

For a graph $G = (V, E)$, the $γ$-graph of $G$ is the graph whose vertex set is the collection of minimum dominating sets, or $γ$-sets of $G$, and two $γ$-sets are adjacent if they differ by a single vertex and the two different vertices are adjacent in $G$. An open question in $γ$-graphs is whether every bipartite graph is the $γ$-graph of some bipartite graph. We answer this question in the negative by demonstrating that $K_{2, 3}$ is not the $γ$-graph of any bipartite graph.

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